crepe myrtle vs crape myrtle

crepe myrtle and crape myrtle both are nouns.

Word	Noun	Adjective	Verb	Adverb
crepe myrtle	Yes	No	No	No
crape myrtle	Yes	No	No	No

As nouns, crepe myrtle and crape myrtle are synonyms defined as:

crepe myrtle and crape myrtle: ornamental shrub from eastern India commonly planted in the southern United States

Other synonyms of crepe myrtle include crepe flower, Lagerstroemia indica.

crepe myrtle (noun)	crape myrtle (noun)
ornamental shrub from eastern India commonly planted in the southern United States	ornamental shrub from eastern India commonly planted in the southern United States